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An ordered pair is a simple way of keeping track of two numbers by writing them in a specific order. Learn about ordered pairs and how they are useful. Calculus: Tutoring Solution / Math Courses
3.1 Functions. A relation is a set of ordered pairs (x, y). Example: The set {(1,a), (1, b), (2,b), (3,c), (3, a), (4,a)} is a relation. A function is a relation (so, it is the set of ordered pairs) that does not contain two pairs with the same. first component. Sometimes we say that a function is a rule (correspondence) that assigns to each. element of one set , X, one and only one element of another set, Y. The elements of the set X are often.